Home / 16,155.78-22,285.87-9,439.98

Finding the Fourth Proportional to 16,155.78, 22,285.87 and 9,439.98

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Solution

The fourth proportional to 16,155.78, 22,285.87 and 9,439.98 is: 13,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,155.78 : 22,285.87 = 9,439.98 : x
  2. Step 2: Convert to fraction form
    16,155.78/22,285.87 = 9,439.98/x
  3. Step 3: Cross multiply
    16,155.78x = 22,285.87 × 9,439.98
  4. Step 4: Simplify right side
    16,155.78x = 210,378,193.75
  5. Step 5: Solve for x
    x = 210,378,193.75/16,155.78
  6. Step 6: Final answer
    x = 13,021.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.